<template>
  <div ref="rightPanel" :class="{ show: show }" class="rightPanel-container">
    <div class="rightPanel-background" />
    <div class="rightPanel">
      <div
        class="handle-button"
        :style="{ top: buttonTop + 'px' }"
        @click="show = !show"
      >
        <i :class="show ? 'el-icon-close' : 'el-icon-setting'" />
      </div>
      <div class="rightPanel-items">
        <slot />
      </div>
    </div>
  </div>
</template>

<script lang="ts">
import { Component, Prop, Vue, Watch } from 'vue-property-decorator';
import { addClass, removeClass } from '@/utils';
import { SettingsModule } from '@/store/modules/settings';

@Component({
  name: 'RightPanel',
})
export default class extends Vue {
  @Prop({ default: false }) private clickNotClose!: boolean;
  @Prop({ default: 250 }) private buttonTop!: number;

  private show = false;

  public mounted() {
    this.insertToBody();
  }

  public beforeDestroy() {
    const elx = this.$refs.rightPanel as Element;
    elx.remove();
  }

  @Watch('show')
  private onShowChange(value: boolean) {
    if (value && !this.clickNotClose) {
      this.addEventClick();
    }
    if (value) {
      addClass(document.body, 'showRightPanel');
    } else {
      removeClass(document.body, 'showRightPanel');
    }
  }

  private addEventClick() {
    window.addEventListener('click', this.closeSidebar);
  }

  private closeSidebar(ev: MouseEvent) {
    const parent = (ev.target as HTMLElement).closest('.rightPanel');
    if (!parent) {
      this.show = false;
      window.removeEventListener('click', this.closeSidebar);
    }
  }

  private insertToBody() {
    const elx = this.$refs.rightPanel as Element;
    const body = document.querySelector('body');
    if (body) {
      body.insertBefore(elx, body.firstChild);
    }
  }
}
</script>

<style lang="scss">
  .showRightPanel {
    overflow: hidden;
    position: relative;
    width: calc(100% - 15px);
  }
</style>

<style lang="scss" scoped>
  .rightPanel-background {
    position: fixed;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.7, 0.3, 0.1, 1);
    background: rgba(0, 0, 0, 0.2);
    z-index: -1;
  }

  .rightPanel {
    width: 100%;
    max-width: 260px;
    height: 100vh;
    position: fixed;
    top: 0;
    right: 0;
    box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.05);
    transition: all 0.25s cubic-bezier(0.7, 0.3, 0.1, 1);
    transform: translate(100%);
    background: #fff;
    z-index: 40000;
  }

  .show {
    transition: all 0.3s cubic-bezier(0.7, 0.3, 0.1, 1);

    .rightPanel-background {
      z-index: 20000;
      opacity: 1;
      width: 100%;
      height: 100%;
    }

    .rightPanel {
      transform: translate(0);
    }
  }

  .handle-button {
    width: 48px;
    height: 48px;
    position: absolute;
    left: -48px;
    text-align: center;
    font-size: 24px;
    border-radius: 6px 0 0 6px !important;
    z-index: 0;
    cursor: pointer;
    pointer-events: auto;
    color: #fff;
    line-height: 48px;

    i {
      font-size: 24px;
      line-height: 48px;
    }
  }
</style>
